This indispensable resource offers a cutting-edge framework and practical tools for screening and assessing K-2 students at risk for reading problems. Provided are critical reviews of 42 specific measures, selected for optimal technical quality and presented in a clear, standardized format. Encapsulated are the scientific basis for each instrument, the components of reading acquisition measured, administration, scoring, and interpretation procedures, the instrument's psychometric soundness and usability, linkages to intervention, source, and cost. Detailed case examples drawn from the author's practice help the reader better understand the type of information generated by each measure and demonstrate how results can be written up in a variety of effective report formats.